Gravely OEM zero turn belts are specifically designed to be a perfect fit for the correct machine every time. Additionally, our OEM belts give you the longevity you need to minimize down time, and the highest quality belt to enhance performance and cut quality. This belt connects the crankshaft to the pumps or transaxles. This belt is designed to be used on select Ariens ZOOM and ZOOM XL and Gravely ZT XL models.